public void Clear() { var cfb = new ControlFlowBuilder(); var il1 = GenerateSampleIL(cfb); cfb.Clear(); var il2 = GenerateSampleIL(cfb); AssertEx.Equal(il1, il2);
private static MethodDefinitionHandle BasicValidationEmit(MetadataBuilder metadata, BlobBuilder ilBuilder) { metadata.AddModule( 0, metadata.GetOrAddString("ConsoleApplication.exe"), metadata.GetOrAddGuid(s_guid), default(GuidHandle), default(GuidHandle)); metadata.AddAssembly( metadata.GetOrAddString("ConsoleApplication"), version: new Version(1, 0, 0, 0), culture: default(StringHandle), publicKey: metadata.GetOrAddBlob(ImmutableArray.Create(Misc.KeyPair_PublicKey)), flags: AssemblyFlags.PublicKey, hashAlgorithm: AssemblyHashAlgorithm.Sha1); var mscorlibAssemblyRef = metadata.AddAssemblyReference( name: metadata.GetOrAddString("mscorlib"), version: new Version(4, 0, 0, 0), culture: default(StringHandle), publicKeyOrToken: metadata.GetOrAddBlob(ImmutableArray.Create <byte>(0xB7, 0x7A, 0x5C, 0x56, 0x19, 0x34, 0xE0, 0x89)), flags: default(AssemblyFlags), hashValue: default(BlobHandle)); var systemObjectTypeRef = metadata.AddTypeReference( mscorlibAssemblyRef, metadata.GetOrAddString("System"), metadata.GetOrAddString("Object")); var systemConsoleTypeRefHandle = metadata.AddTypeReference( mscorlibAssemblyRef, metadata.GetOrAddString("System"), metadata.GetOrAddString("Console")); var consoleWriteLineSignature = new BlobBuilder(); new BlobEncoder(consoleWriteLineSignature). MethodSignature(). Parameters(1, returnType => returnType.Void(), parameters => parameters.AddParameter().Type().String()); var consoleWriteLineMemberRef = metadata.AddMemberReference( systemConsoleTypeRefHandle, metadata.GetOrAddString("WriteLine"), metadata.GetOrAddBlob(consoleWriteLineSignature)); var parameterlessCtorSignature = new BlobBuilder(); new BlobEncoder(parameterlessCtorSignature). MethodSignature(isInstanceMethod: true). Parameters(0, returnType => returnType.Void(), parameters => { }); var parameterlessCtorBlobIndex = metadata.GetOrAddBlob(parameterlessCtorSignature); var objectCtorMemberRef = metadata.AddMemberReference( systemObjectTypeRef, metadata.GetOrAddString(".ctor"), parameterlessCtorBlobIndex); var mainSignature = new BlobBuilder(); new BlobEncoder(mainSignature). MethodSignature(). Parameters(0, returnType => returnType.Void(), parameters => { }); var methodBodyStream = new MethodBodyStreamEncoder(ilBuilder); var codeBuilder = new BlobBuilder(); InstructionEncoder il; // // Program::.ctor // il = new InstructionEncoder(codeBuilder); // ldarg.0 il.LoadArgument(0); // call instance void [mscorlib]System.Object::.ctor() il.Call(objectCtorMemberRef); // ret il.OpCode(ILOpCode.Ret); int ctorBodyOffset = methodBodyStream.AddMethodBody(il); codeBuilder.Clear(); // // Program::Main // var flowBuilder = new ControlFlowBuilder(); il = new InstructionEncoder(codeBuilder, flowBuilder); var tryStart = il.DefineLabel(); var tryEnd = il.DefineLabel(); var finallyStart = il.DefineLabel(); var finallyEnd = il.DefineLabel(); flowBuilder.AddFinallyRegion(tryStart, tryEnd, finallyStart, finallyEnd); // .try il.MarkLabel(tryStart); // ldstr "hello" il.LoadString(metadata.GetOrAddUserString("hello")); // call void [mscorlib]System.Console::WriteLine(string) il.Call(consoleWriteLineMemberRef); // leave.s END il.Branch(ILOpCode.Leave_s, finallyEnd); il.MarkLabel(tryEnd); // .finally il.MarkLabel(finallyStart); // ldstr "world" il.LoadString(metadata.GetOrAddUserString("world")); // call void [mscorlib]System.Console::WriteLine(string) il.Call(consoleWriteLineMemberRef); // .endfinally il.OpCode(ILOpCode.Endfinally); il.MarkLabel(finallyEnd); // ret il.OpCode(ILOpCode.Ret); int mainBodyOffset = methodBodyStream.AddMethodBody(il); codeBuilder.Clear(); flowBuilder.Clear(); var mainMethodDef = metadata.AddMethodDefinition( MethodAttributes.Public | MethodAttributes.Static | MethodAttributes.HideBySig, MethodImplAttributes.IL | MethodImplAttributes.Managed, metadata.GetOrAddString("Main"), metadata.GetOrAddBlob(mainSignature), mainBodyOffset, parameterList: default(ParameterHandle)); var ctorDef = metadata.AddMethodDefinition( MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName, MethodImplAttributes.IL | MethodImplAttributes.Managed, metadata.GetOrAddString(".ctor"), parameterlessCtorBlobIndex, ctorBodyOffset, parameterList: default(ParameterHandle)); metadata.AddTypeDefinition( default(TypeAttributes), default(StringHandle), metadata.GetOrAddString("<Module>"), baseType: default(EntityHandle), fieldList: MetadataTokens.FieldDefinitionHandle(1), methodList: mainMethodDef); metadata.AddTypeDefinition( TypeAttributes.Class | TypeAttributes.Public | TypeAttributes.AutoLayout | TypeAttributes.BeforeFieldInit, metadata.GetOrAddString("ConsoleApplication"), metadata.GetOrAddString("Program"), systemObjectTypeRef, fieldList: MetadataTokens.FieldDefinitionHandle(1), methodList: mainMethodDef); return(mainMethodDef); }